Can ammonia water be injected in catalytic flue gas desulfurization?
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My unit is a catalytic device; flue gas desulfurization is carried out using the Berg process (a wet flue gas desulfurization method), with sodium hydroxide solution being used as the alkaline agent to absorb acidic gases； After the introduction of flue gas denitration, Metson’s process package (SCR process) uses ammonia for denitration; during this process, ammonia water is generated (the leaked ammonia enters a liquid ammonia dilution tank, where it turns into ammonia water). Is it possible to feed this ammonia water into the scrubber tower of the desulfurization unit? What would be the consequences of doing so? Could it lead to an increase in nitrogen oxides at the outlet of the desulfurization unit? And could it result in the formation of sulfuric acid, which might clog the nozzles in the scrubber tower?
Of course ammonia can be used for injection; there is already an ammonia-based method for flue gas desulfurization and denitration.
Currently, no denitration systems in the country are operational